Method for manufacturing waterproof mobile phone back shell

Abstract

The invention discloses a method for manufacturing a waterproof mobile phone back shell. The method comprises an aluminum housing moulding and machining procedure, an aluminum housing CNC machining procedure, a T treatment procedure, an NMT nano injection moulding procedure, an oxidative treatment procedure and an assembly testing procedure and further comprises a groove CNC machining procedure; an aperture of a nano hole formed in the T treatment procedure is 35-45 [mu]m; an injection moulding material is a PBT material having a bonding strength of 28 MPa and a glass fiber reinforcement smaller than 36%; and the injection moulding mould is provided with four glue injection ports. It is concluded by an inventor via experimental research and development that in combination with improvementsin six aspects such as the structural improvement in the aluminum housing, the increased improvement of the nano hole in the T treatment, the improvement in properties of the injection moulding material, the improvement in injection moulding mould and injection moulding process, and the improvement in secondary oxidation of the oxidative treatment, the waterproof level of the moulded mobile phoneback shell can be up to 8 level, the waterproof performance is excellent, and the waterproof function of the existing high-end intelligent mobile phone can be met.

Description

technical field [0001] The invention relates to a manufacturing process of a mobile phone, in particular to a manufacturing process of a mobile phone back case with good waterproof effect. Background technique [0002] Metal has been a favorite appearance material for human beings since ancient times. It has been widely used in the casing of mobile phones because of its beautiful appearance, especially the aluminum material has been widely promoted. However, the waterproof performance of aluminum mobile phone cases is poor. In order to meet the waterproof function requirements of mobile phones, most of them use waterproof glue, sealing rings or plastic parts to prevent water seepage at the junction. commonly used. However, the waterproof effect of this combined metal shell is still relatively unsatisfactory, and cannot achieve the existing waterproof effect. [0003] In view of this, the inventor has carried out in-depth research on the above-mentioned problem, and then pr...

AI Technical Summary

Problems solved by technology

However, the waterproof performance of aluminum mobile phone cases is poor. In order to meet the waterproof function requirements of mobile phones, most of them use waterproof glue, sealing rings or plastic parts to prevent water seepage at the junction. commonly used

However, the waterproof effect of this combined metal shell is still relatively unsatisfactory, and the existing waterproof effect cannot be achieved.

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